petrified

「petrified」是「震驚、嚇得目瞪口呆」，例如：

They were petrified with fear when hearing the horrible news.（當他們聽到那可怕的消息時，都嚇得呆若木雞。）

He had always been petrified of being left alone.（他總因被單獨留下來而震驚。）

It was obvious she was petrified to venture anywhere near the equatorial.（很明顯地，她被要去赤道附近探險嚇呆了。）

at the earliest

「at the earliest」是「最早」，例如：

The final outcome was not expected until July at the earliest.（最早要到七月才有可能獲得最終結果。）

They intend to close the school at the earliest opportunity, but we can't finish our research before next Friday.（他們打算盡早關閉學校，但我們的研究至少要到下周五才能完成。）

These theories were not associated with astronomy until the eighteenth century at the earliest.（這些理論，最早要追溯到18世紀才與天文學發生關聯。）

turn to

「turn to」是「變成」；「求助」，例如：

If you overcook the cabbage it'll turn to mush.（如果你煮太久，白菜會變成糊狀。）

The little girl always turns to her teacher whenever she's in trouble.（每當遇到麻煩時，小女孩總是向老師求助。）

Books are the best friends.No matter what difficulties you meet with in life, you can turn to them for help and they will never discard you.（書是最好的朋友，無論生活中遇到什麼困難，都可以求助於書，它永遠不會背棄你。）